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DO Advanced

October 2011

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Maximizing the Performance of EV-DO

Higher Network Capacity and Improved User ExperienceWhere and when needed

Benefits Existing DevicesEven better performance for new devices

Cost-Effective Software Upgrade

Software Released; Standards PublishedCSM Firmware released and standard published in 2010

DO

Adva

nced

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1X and EV-DO Have Strong Evolution Paths

2012 2013 2014+2011

Created 06/20/2011

1Peak rate for 3 EV-DO carriers supported by initial implementation.

2Peak rate for 3 EV-DO carriers with 64QAM in the DL. Rev. B standard supports up to 15 aggregated Rev. A carriers.3 Same peak rates as Rev. B, but with new dimension of enhancements4Capacity increase possible with new codec (EVRC-B) and handset interference cancellation (QLIC). 54x increase withreceive diversity; 3x without

Best in classvoice capacity

1.5x increase withavailable features4

Up to 4x increase5

1X AdvancedCDMA20001X

SIMULTANEOUS 1X VOICE AND EV-DO/LTE DATA (SVDO/SVLTE)

DO Advanced

Multicarrier

EV-DO

Rev A H/W Upgrade

EV-DO Rev. B(Commercial)

Broadband Up &Downloads

3x data rates toall users in cell

Higher capacityand data rates

DL: 3.1 MbpsUL: 1.8 Mbps

DL: 9.3 Mbps1UL: 5.4 Mbps



Higher network capacity andimproved user experience

Commercial

Note: Estimated commercial dates

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EV-DO Rev. B is Growing

GROWING OPERATOR COMMITMENT

LAUNCHES COMMITMENTS

DEVICES

Source: CDG, Oct 2011

DEVICES ACROSS ALL SEGMENTS

ALL MAJOR EV-DO INFRA VENDORSSUPPORT REV. B

VENDORS

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An evolution path that leverages current investments

InitialInvestment

CDMA2000

1X

Broadbanddownloads

Broadbanduploads

Smart NetworksUp to 3 carriersBTS Interference

cancellation

EV-DO EV-DO Rev. BDO

AdvancedChannel Card SW UpgradeChannel Card Channel Card SW Upgrade

1X

Advanced

1XEnhancements

Network Upgrade Channel Card

4x Increase invoice capacity

1.5x Voicecapacity

Rel. 0 Rev. A Multicarrier H/W Upgrade

Incremental and Cost-Effective Upgrades

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Expanding EV-DO Ecosystem

>534MCDMA 2000 SUBSCRIPTIONS

~ 209 MillionEV-DO

~ 88 MillionRev. A

>325CDMA OPERATORS~ 121EV-DO

>2,733CDMA 2000 DEVICES

~ 612EV-DO

~423Rev. A

Sources: Subscriber Information : Wireless Intelligence estimates as of Jul 18th, 2011 for quarter ending Jun 30th , 2011, not including WLL;

Operators, devices, vendors related information : CDG. Jul 2011

~123Rev. A

7Rev. B

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183

234

283

324

354

2010 2011 2012 2013 2014 2015

EV-DOs Strong Growth Continues

Millions

> 375 M Subs

EV-DO Connections

Source: Wireless Intelligence estimates as of July 18, 2011 for the quarter ending June 30, 2011 ; not including WLL connections

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8/248Source: Qualcomm Simulations for 10 MHz FDD: 3GPP2 methodology - 2km site-to-site dist., embedded sector, mixed channel, full buffer traffic, proportional-fairscheduler; 7 carrier considered for Rev. B . Cell-edge rates are the worst 5 percentile of the over all data rate distribution in the cell, 64 QAM not considered for Rev. B

Similar Rev. B and LTE Cell EdgePerformance using Fair ComparisonWhen using same amount of spectrum

Rel . 8 (2x2 MIMO)Rev. B (RxD 1x2)

EV-DO

LTE

x 1.1x(10.3 Mbps)

(11.9 Mbps)

DL Capacity

Cell edge performance can be traded for even highercell capacity at the expense of fairness

DL Cell-Edge Data Rates

63 kbps53 kbps

EV-DO(Rev. B)

LTE

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Increased networkcapacity and data ratesby exploiting unevennetwork loading

(Network Load Balancing,Distributed Network Scheduler,Adaptive Frequency Reuse,Single Carrier Multi-Link,Smart Carrier Management )

DO Advanced: New Dimension of Enhancements

Increased connection-capacity by more

efficient use of existingresources

(Parameter Optimization,Implementation Enhancements)

SmartNetworks

EnhancedConnection

Management

Enhanced Equalizer- Improved performancefor uneven and bursty

traffic

Mobile Tx Diversity- Higher UL capacity anddata rates

AdvancedDevices

SoftwareUpgrade

Infra/StandardsIndependent

SoftwareUpgrade

Software upgrade that benefits existing and new devices

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Smart Networks Exploit Typically UnevenlyLoaded Networks

Network loading continuously changes with time and location

Fully loaded sectors are usually surrounded by lightly loaded neighbors

Heavy Load

Medium Load

Light Load

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Smart Networks Increase Network Capacityand User Experience, Where & When Needed

Improvement depends on deployment, demand distribution and implementation. Apart from the above, Adaptive Frequency Reuse (aka DemandMatched Configuration) is also another Smart Network technique.

Network Load BalancingUtilizing unused capacity of lightly loaded neighbors

Smart Carrier ManagementAssigning carriers based on accurate load and location

Distributed Network SchedulerUsers preferentially served by carriers that maximize capacity

Single Carrier Multi-LinkLeveraging multicarrier devices in single-carrier networks

Can double network capacity and cell-edge data rates

Carrier# 1

Carrier # 2

High Load

Low Load

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Network Load Balancing Utilizes UnusedCapacity of Lightly Loaded NeighborsUsers in highly loaded cells offloaded to neighbors, when needed

X

Today(Connected to

loaded cell)

DO Advanced(Offloaded toneighbor cell)

2X

Example:User data rate

Improved data rates forboth offloaded usersand users in loaded cell

Higher overall networkcapacity

Reduced backhaulbottle-necks

Loading assumed:Loaded cell- 80%; Neighbor cell- 20%

High Load Low Load

Today

DO Advanced

Note: Performance improvement depends on deployment, demand distribution and implementation.

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Smart Carrier Management: Assignmentbased on Load and Location

Better UtilizationAssignment based on accurate loading

Improved Cell-Edge Data RatesAssignment based on location

High Load Low Load

Allows single carrier devices to benefit fromhotspot carriers

Carrier# 1

Carrier # 2

Carrier# 2

Today DO Advancedor

Carrier# 1

Carrier# 2

Larger coverage areaof Carrier #2 becauseof lower interference

Benefits both single and multicarrier devices

Single CarrierDevice

Today DO Advancedor

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Distributed Network Scheduler MaximizesCapacity by Prioritizing CarriersIncreased overall capacity and cell-edge data rates, especially in hotspots

Users closer to BTSare primarily servedby Carrier #1

Todays NetworksAll users served by all assigned carriers

DO AdvancedUser served by most suitable carrier/s

Example:User Data Rates

1.2Mbps

2.4Mbps

User

on Cell-Edge

User

close to BTS

0.7Mbps

2.4Mbps

Carrier# 1

Carrier # 2

Cell-edge usersprimarily servedby Carrier #2

Larger coverage areaof Carrier #2 becauseof lower interference(e.g. hotspots)

Userclose to BTS

Note: Performance improvement depends on deployment, demand distribution and implementation

Useron Cell-Edge

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Adaptive Frequency Reuse ReducesInterference to Increase CapacityBy adjusting transmit power of lightly loaded cells

High Load

Low Load

Carrier# 1 Always at full Tx power(fixed coverage)

Carrier# 2 -Tx power (coverage) reducedfor cells with lower demand.Results in better utilization ofsurrounding cells

Note: This feature is also known as Demand Matched Configuration

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Leveraging Multi-Link Devices in Single-Carrier NetworksSingle Carrier Multi-Link enables connection to two single-carrier cells

Higher cell-edge datarates, especially formulticarrier devices

Even better networkload balancing

Higher overall networkcapacity

Carrier # 1 Carrier# 1

Multi-LinkDevice

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DO Advanced Performance Improvement -Example

Note: The performance shown is for users in the central cells (with 2x load) . The increase depends on deployment, demand distribution and implementation

Relative Sector Load:

Sample Cluster with Uneven Load

x 2x

-1 -0.5 0 0.5 1

Dist. in km

-1

-0.5

0

0.5

1

1.5

-1.5

Dist.inkm

Improved Performance During Loaded Conditions

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Source: Qualcomm simulations. assumes 1 single carrier macro, with 2 double carrier picocells. Pico-cells arerandomly placed in the network. The data loading ratio of 4:1 between high-demand and low-demand areas

Macro(1 Carrier)

DO Advanced techniques applied to networks with microcells, picocells, etc.

X

Macro

Network Capacity (DL)

Pico cell(2 carrier)

Example: Improvement withDO Advanced Pico cell deployment

1.7X

Macro+

Pico

DO Advanced

3.3X

(Macro + Pico)

DO Advanced Optimizes Performance ofHeterogeneous Networks

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Enhanced Connection Management: ImprovedConnection-Capacity and User Experience

Supports more interactive userssuch as push-pull mobile email

Efficient use of paging and accesschannels

Better traffic congestionmanagement

EnhancedConnection

Management

Improved Always ON experience

Improved battery life

Better user experience evenduring congestion

Higher Connection -Capacity

Better user Experience

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Advanced Devices Improve Performancewithout Standards or Infrastructure Impact

1 Assumes ~50% loading , the worst 10 percentile considered as cell-edge users; 2 Represents neighbor transmit probability,

Full 100%, Typical 25%, Low 5% ; Other simulation assumptions - 3GPP2 methodology and channel mix, RoT/Effective RoT= 6dB, realistic Tx antenna modeling (handheld device model, laptop model) EV-DO Rev.A/B packet formats.

Higher DL Sector CapacityHigher DL Cell-Edge Data Rates1

~10%

Full

Higher gains for Dense Urban Sites(short site-to-site distance)

Higher gains for lower loading inneighboring sectors2

Load in Neighboring Sectors

~20%

Typical

~25%

Low

Enhanced Equalizer exploits uneven loading and bursty traffic

~45%

~25%0.5kmsite-to-sitedist.

1.5kmsite-to-site

dist.

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Mobile Tx Diversity Improves both Uplinkand Downlink Performance

Closed loop tx diversity will need infrastructure upgrade and a new standard, but open loop does not; 1 the worst 10 perentile considered as cell-edge users; ; Othersimulation assumptions - 3GPP2 methodology and channel mix, RoT/Effective RoT = 6dB, realistic Tx antenna modeling (handheld device model, laptop model) EV-DORev.A/B packet formats, ant. model with 0% correlation between two pairs of ant. and 50% correlation within each pair (for tx diversity simulations).

Higher UL Sector Capacity

~30%

BTS IC further improves the gains of Mobile Tx Diversity

~20%

Mobile TxDw/o BTS IC

Mobile TxDw/ BTS IC

Higher UL Cell-Edge Rates

~110%

Mobile Tx Dw/o BTS IC

Mobile TxDw/ BTS IC

~80%

Increase in UL data rates improves DLperformance for bursty apps (web browsing)

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Maximizing the Performance of EV-DO

Higher Network Capacity and Improved User ExperienceWhere and when needed

Benefits Existing DevicesEven better performance for new devices

Cost-Effective Software Upgrade

Software Released; Standards PublishedCSM Firmware released and standard published in 2010

DO

Adva

nced

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Questions? Connect with Us

www.qualcomm.com/technology

http://www.qualcomm.com/blog/contributors/prakash-sangam

@qualcomm_tech

m.qualcomm.com/technology
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